Warp stop-motion for looms.



Patented July 18, 1905.

PATENT OFFICE.

NAPOLEON BOIVERT, OF

LAWRENCE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION OF MAINE.

WARP STOP-MOTION FOR LOOMS- SPECIFICATION forming part of Letters Patent No. 794,922, dated July 18,

Application filed March 18. 1905. Serial No. 250,743.

T0 at whom it may concern:

Be it known that I, NAPOLEON Borvnnr, a citizen of the United States, and a resident of Lawrence, county of Essex, State of Massachusetts, have invented an Improvement in WVarp Stop-Motions for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention has for its object the production of simple mechanism for indicating,automatically to the weaver whether a released detector is in the front or rear bank of detectors in a single-thread warp stop-motion mechanism, means being provided whereby by'a simple and rapidly -executed manual operation the position of the released detector in its particular bank is readily found.

My invention is particularly adapted for use p in connection with warp stop-motion mechanism wherein the stop-m'otion-controlling detectors are arranged in two parallel banks, each detector being governed by a single warpthread. Several hundred detectors are usually contained in each bank, and when the 7 bank in which the released detector is located has been indicatedautomatically in the present instance-its position among its fellows must be discovered. By means of my present invention this is readily found by manual operation of the automatic indicating means, as will be fully described hereinafter.

Figure 1 is a transverse section of a loom having a warp stop-motion mechanism of the type referred to and with my present invention applied thereto. Fig. 2 is an enlarged detail in front elevation of one end of the controlling-detectors, showing more clearly the novel features of my invention; and Fig. 3 is a crosssection on the line 3 3, Fig. 2, looking toward the left, the signal being set to show that the released detector is in the rear bank.

In the drawings, Fig. 1, the stop-motioncontrolling detectors d5 d arranged in parallel banks and slotted longitudinally to receive the transverse supports 6?, attached at their ends to brackets, as B, bolted to stands a on the loom sides, the back-stops B and B the separator B between the detectors and also serving as a warp-rest, each detector be- 1ng governed by a single warp-thread, and the feeler f, rigidly connected by arms f with a rock -shaft F, located below the detectors, may be and are all substantially of well-known construction.

The means for effecting the normal vibration of the feeler and for effecting the release of the shipper S form no part of my present invention; but they may be conveniently such as shown in United States Patent to Stimpson, No. 673,824., dated May 7 1901. Of such means I have shown only the upper ends of the links h and if, the former pivotally connected with-an arm f loosely mounted on the rock-shaft F and normally turning the same by or through the spring 8, Fig. 2, as in said patent, the link if being pivotally connected with an arm f fixedly secured to the rock-shaft. An upright stand 1 is secured to the back-stop B, (see particularly Fig. 2,) adjacent the bracket B and at the front of the two banks of detectors, stand being overturned to form an overhanging projection 2, Figs. 2 and 3. Below this projection an index 3, shown as a transverse rise or lug on the outer face of the stand 1, is arranged to cooperate with a signal, the position of the signal with relation to such index indicating in which bank the released detector is located. Below the index the upright is provided with an apertured horizontal ear 4, through which is loosely extended an upright vertically-movable rod 5, pivotally connected at its lower end to an arm 6, fast on the feeler rock-shaft F. The upper end of the rod 5 is bent over and forward, as at 7, to form a visual indicator or signal as well as a finger-piece.

When the feeler is arrested by a released detector in the rear bank, as illustrated in Figs. 2 and 3, the arm 6 is depressed, and thereby the signal 7 is positioned substantially directly in .front of the index 3, the weaver knowing that when the signal is so positioned the released detector must be looked for in the rear bank. If, on the other hand, the released detector is in the front bank, the arm 6 will be held up in its dotted-line position, Fig.

3, so that the signal 7 will assume its dotted-.

the finger-piece 7 and press upward, thereby causing the feeler to grip the detector 03 and when the fingers are drawn across the detectors of the rear bank the free ones will sway or move more or less, while the gripped de- 'tector will be held rigid,-and this will instantly be noted by the weaver. Thus manual operation of the automatic means serves to readily find the released detector in its particular bank. If the released detector is in the front bank, of course the weaver will press down on the finger-piece 7 to hold such detector while the fingers are passed across the detectors in the front bank.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is

1. In a loom, in combination, two banks of stop-motion-controlling detectors each governed by a single warp-thread,- a vibrating feeler to engage and be arrested by a released detector in either bank, and automatically-acting means to indicate in which bank the released detector is located, said means including a vertically-reciprocating signal and a fixed index adjacent thereto, and a connection between the signal and the feeler, to reciprocate vertically the signal and vary its position with relation to the index.

- 2. In a loom, in combination, two banks of stop-motion-controlling detectors each governed by a single warp-thread, a vibrating feeler to engage and be arrested by a released detector in either bank, a vertically-movable signal at one end and in front of the banks of the detectors, a fixed index adjacent the signal and a connection between the feeler and said signal, to" vary the vertical position of the latter with relation to the fixed index and thereby indicate automatically in which bank the released detector is located.

3. In a loom, in combination, two banks of stop-motion-controlling detectors each governed by'a single warp-thread, avibrating feeler to engage and be arrested by a released detector in either bank, a fixedly-mounted, upright stand having an index and a guide thereon, a visual signal vertically movable in the guide, and a connection between the signal and the feeler, to normally reciprocate the signal and by its position relative to the index, upon arrest of the feeler, to indicate in which bank the released detector is located.

4. In a loom, in combination, two banks of stop-motion-controlling detectors each governed by a single warp-thread, a vibrating feeler to engage and be arrested by a released detector in either bank, and manually-operated means operatively connected with the feeler to cause the latter to press upon and hold in fixed position the released detector, whereby its location in the bank can be found quickly, said means including a verticallymovable member having afinger-piece to facilitate its manual operation.

5; In a loom, in combination, two banks of stop-motion-controlling detectors each governed bya single warp-thread, a vibrating feeler to engage and be arrested by a released detector in either bank, and manually-operated means operatively connected with the feeler to cause the latter to press upon and hold in fixed position the released detector, whereby its location in the bank can be found quickly, said means including a verticallymovable member located at one end and in front of the banks of detectors and provided with a finger-piece to facilitate manual movement thereof.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

NAPOLEON BOIVERT.

'Witnesses:

ONESIME LANDRY, ARTHUR R. IRVINE. 

